Expires:202308060200;Remove:202308060200;118326 WGUS53 KFSD 052220 FFWFSD IAC119-141-143-167-060200- /O.NEW.KFSD.FF.W.0007.230805T2220Z-230806T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Sioux Falls SD 520 PM CDT Sat Aug 5 2023 The National Weather Service in Sioux Falls has issued a * Flash Flood Warning for... Eastern Lyon County in northwestern Iowa... O'Brien County in northwestern Iowa... Western Osceola County in northwestern Iowa... Northeastern Sioux County in northwestern Iowa... * Until 900 PM CDT. * At 520 PM CDT, Doppler radar and automated rain gauges indicated thunderstorms produced heavy rain across the warned area, with between 4 and 6 inches of rain already fallen. Additional thunderstorms are expected, with the expected rainfall rate being 2 to 4 inches in 1 hour. Additional rainfall amounts of 1 to 3 inches are possible in the warned area. Flash flooding is expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Sheldon, Sibley, Hartley, Sanborn, Primghar, Sutherland, Little Rock, Ashton, Melvin, Matlock and Calumet. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. && LAT...LON 4329 9597 4338 9595 4340 9600 4342 9604 4344 9606 4350 9611 4349 9579 4326 9552 4324 9549 4300 9539 4291 9554 4291 9563 4315 9572 4315 9598 4316 9597 FLASH FLOOD...RADAR AND GAUGE INDICATED EXPECTED RAINFALL RATE...2-4 INCHES IN 1 HOUR $$ APT